Wireless network tab missing in Vista

Weird problem. I hooked up a linksys device to one of my laptop to change settings on it. Now that I have unhooked it. For some reason, there is no longer a network tab under the properties of my wireless card! I have enabled the wired and wlan config in services but it still will not come back! I'm trying to configure a wireless connection with the internal wireless card like I normally do. The tab is just no longer there! I have no idea why and I'm lost.

Any ideas? Remember this is Vista there is no wireless zero configuration just the wired and wlan config.

Is your copy of Vista updated to SP1? What version of Vista are you running? Is your system clean and free of viruses and other malware. By Network tab, do you mean the word "Network" in the start menu?